The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 03, 1998
Filed:
Jun. 04, 1992
Applicant:
Inventors:
Naoki Takatori, Tokyo, JP;
Masaaki Orimoto, Tokyo, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359495 ; 359497 ; 359498 ; 359502 ;
Abstract
An optical filter comprising a birefringent material which is interposed between a taking lens and an image pickup device for removing a component corresponding to a frequency multiplexing in a spacial frequency manner from a high frequency component contained in an image of an object. In the optical filter, the angle formed between its optical axis and an incident plane is smaller than an angle of 45.degree., preferably, approximately 35.degree..